[Malacoda]

It's pretty common for people to work for the Amish, driving them hither and yon on errands and such. Not technically taxis, but usually refereed to as taxis.

I've seen the ads outside of Shady Maple farm market -- either Amish looking for someone to taxi them, or people willing to taxi the Amish about.

[Strategerist]

We lived a bit north of the Amish center of gravity in PA, but there were some and my Dad would go to Amish auctions, and ended up giving one family rides quite a bit.

So indeed people shouldn't have this image of a guy in a literal taxi cab with a meter and a light on the top out driving Amish around, in regards to the reports the perp was a taxi driver.